Sony CD-DH790N operation manual Maintenance

Troubleshooting chart (continued)

■ USB

Symptom			Possible cause
● Device cannot		be	● Is there any MP3/WMA file
detected.			available?
			● Is the	device	properly
			connected?
			● Is it an MTP device?
			● Does the device contain
			AAC file only?
● Playback	does	not	● Is it a copyright protected
start.			WMA file?
			● Is it a false MP3 file?
● Wrong time display.			● Is Variable Bitrate file being
● Wrong	file name		played back?
display.			● Is the File Name written in
			Chinese	or	Japanese
			characters?

■Factory reset, clearing all memory

1Press the ON/STAND-BY button to enter the power stand-by mode.

2While pressing down the OPEN/CLOSE button, press the POWER ON/STAND-BY button until “ALL CLEAR” appears.

POWER

ON/STAND-BY

Caution:

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD program.

■	iPod
	Symptom	Possible cause
● No sound is		● The iPod is not playing.
	produced.	● The iPod is not properly
	No image appears	connected to the unit.
	on the TV/monitor.	● Is the AC power cord of the
		unit plugged in?
		● The video cable is not
		properly connected.
		● The TV/monitor’s input
		selection is not properly
		set.
● iPod will not charge.		● Wrong iPod adaptor is
		used.
		● The iPod is not making full
		contact with the iPod
		connector.
		● The main unit is in stand-by
		mode.
		● Using 3rd generation iPod.
■	Condensation

Sudden temperature changes, storage or operation in an extremely humid environment may cause condensation inside the cabinet (CD pickup, etc.) or on the transmitter on the remote control. Condensation can cause the unit to malfunction. If this happens, leave the power on with no disc in the unit until normal playback is possible (about 1 hour). Wipe off any condensation on the transmitter with a soft cloth before operating the unit.

■Before transporting the unit

Remove all CDs from the unit. Make sure there is no CD in the disc tray. Then, set the unit to the power stand-by mode. Carrying the unit with discs left inside can damage the unit.

■Care of compact discs

Compact discs are fairly resistant to damage, however mistracking can occur due to an accumulation of dirt on the disc surface. Follow the guidelines below for maximum enjoyment from your CD collection and player.

●Do not write on either side of the disc, particularly the non-label side from which signals are read. Do not mark this surface.

●Keep your discs away from direct sunlight, heat, and excessive moisture.

●Always hold the CDs by the edges. Fingerprints, dirt, or water on the CDs can cause noise or mistracking. If a CD is dirty or does not play properly, clean it with a soft, dry cloth, wiping straight out from the center, along the radius.

NO	YES
	Correct

■If problem occurs

When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction.

If such a problem occurs, do the following:

1Set the unit to the stand-by mode and turn the power on again.

2If the unit is not restored in the previous operation, unplug and plug in the unit again, and then turn the power on.

Note:

If neither operation above restores the unit, clear all the memory by resetting it.

Maintenance

■Cleaning the cabinet

Periodically wipe the cabinet with a soft cloth and a diluted soap solution, then with a dry cloth.

Caution:

●Do not use chemicals for cleaning (gasoline, paint thinner, etc.). It may damage the cabinet.

●Do not apply oil to the inside of the unit. It may cause malfunctions.

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